Alkylamine-mediated synthesis and optical properties of copper nanopolyhedrons
Gao, Qi; Kan, Caixia; Li, Junlong; Wei, Jingjing; Ni, Yuan; Wang, Changshun
2016-10-27 00:00:00
Keywords Copper nanocubes Copper nanotetrahedrons Alkylamine Aggregative growth Plasmon resonance Introduction In recent years, copper (Cu) nanostructures have attracted great interest as metal nanomaterials because of their advantages of excellent optical, electrical, thermal, and catalytic properties for use in various applications; For example, Cu nanoparticles have been widely used as catalysts for water–gas shift and gas detoxiﬁcation reactions [1–4]. Cu nanowires are used for fabrication of high- performance transparent electrodes because of their high conductivity and optical transmittance [5–9]. These transparent electrodes are essential components for touchscreens, solar cells, organic light-emitting diodes, and many other optoelec- tronic devices. In addition, Cu has the second highest electrical conductivity of all the metals and is more abundant and less expensive compared to gold (Au) and silver (Ag). However, due to the difﬁculty in reducing Cu ions to metallic Cu and the susceptibility of Cu nanostructures to oxidation upon exposure to air and water, synthesis of Cu nanostructures with high stability and anisotropy remains a challenge [10]. Therefore, extensive research efforts have been made to fabricate Cu nanocrystals with well-deﬁned facets and controllable shape. Although a few such methods have been developed to synthesize uniform Cu nanoparticles [11–15] and
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